drag and drop files into folders

[alanedelman]

Ability to drag files in files view into folders

Important use case --- You have files in the home directory
and you decide later you want to backup on google drive,
but don't know unix commands. The only option you have
is to download.

[NHDaly]

Doesn't need to be drag and drop, but some way to move files would be nice. It seems JuliaBox's UI for navigating the files comes from iPython Notebook / Jupyter.

This Issue tracks the same feature request:
jupyter/notebook#471

[NHDaly]

I submitted jupyter/notebook#941 and am working on jupyter/notebook#1088, which add basic move functionality to Jupyter.